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33in tires and speedo is off

Old 02-28-2014, 08:20 PM
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Default 33in tires and speedo is off

I just put a 4.5 lift on my 98 xj and I have 33in tires under it. Since bigger tires throws your speedometer off. Is there anything out there to calibrate it back?
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Old 02-28-2014, 09:18 PM
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Im pretty sure re-gearing...Correct me if I am wrong..
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Old 02-28-2014, 10:28 PM
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All you have to do is buy a different speedo gear to accommodate for the different size of tire. They can be bought from plenty of places for all different sizes of tires.
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Old 03-01-2014, 07:46 AM
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Originally Posted by ThatDude114 View Post
All you have to do is buy a different speedo gear to accommodate for the different size of tire. They can be bought from plenty of places for all different sizes of tires.
Thanks for your help!
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Old 03-01-2014, 08:12 AM
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Old 03-01-2014, 08:53 AM
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30 tooth short shaft speedo gear
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Old 03-01-2014, 09:17 AM
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Originally Posted by Grip View Post
30 tooth short shaft speedo gear
Personally I'd go with the 31 tooth shaft if the OP still has 3.55 gearing. I ran it and was GPS accurate. Not that a MPH or two will make much of a difference most of the time.

Here is a good link to the swapping of the speedo gear. Also, it includes a chart that shows the teeth counts that have been GPS verified for gear/tire size ratios.
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